Figure F76. Photograph and photomicrographs showing features of a recrystallized aphanatic flow margin. A. Recrystallized aphanitic flow lobe margin (light gray 1-mm-thick layer) between coalesced flow lobes (interval 206-1256D-37R-2, 12-14 cm). B. Microscopic view of the recrystallized flow margin in A, showing folding and flow structures in dark finer-grained patches within light coarser-grained matrix. C. The upper lava (top) is chilled against the lower recrystallized flow margin (bottom). Thin plagioclase laths embedded in granular clinopyroxene grew perpendicular to the contact. D. The lower lava (lower right) at the contact with the band (upper left).

Figure F76. Photograph and photomicrographs showing features of a recrystallized aphanatic flow margin. A. Recrystallized aphanitic flow lobe margin (light gray 1-mm-thick layer) between coalesced flow lobes (interval 206-1256D-37R-2, 12-14 cm). B. Microscopic view of the recrystallized flow margin in A, showing folding and flow structures in dark finer-grained patches within light coarser-grained matrix. C. The upper lava (top) is chilled against the lower recrystallized flow margin (bottom). Thin plagioclase laths embedded in granular clinopyroxene grew perpendicular to the contact. D. The lower lava (lower right) at the contact with the band (upper left).